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Finding the Fourth Proportional to 15,049.59, 20,767.86 and 8,243.50

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Solution

The fourth proportional to 15,049.59, 20,767.86 and 8,243.50 is: 11,375.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,049.59 : 20,767.86 = 8,243.50 : x
  2. Step 2: Convert to fraction form
    15,049.59/20,767.86 = 8,243.50/x
  3. Step 3: Cross multiply
    15,049.59x = 20,767.86 × 8,243.50
  4. Step 4: Simplify right side
    15,049.59x = 171,199,853.91
  5. Step 5: Solve for x
    x = 171,199,853.91/15,049.59
  6. Step 6: Final answer
    x = 11,375.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.